Research has shown that bodies lacking vitamin D have more
than double the risk of dying from heart disease than their vitamin D-rich
counterparts. One reason for the lack of vitamin D in their system could be
from lack of outdoor activity.
Wait! – Isn't Being
Outdoors Without Sunscreen Unhealthy?
If you plan on spending long amounts of time outside, then
yes, it is recommended that you use sunscreen to protect your skin. But,
spending a short amount of time outside when the ultraviolet (UV) index is less
than 3 does not warrant slathering sunscreen on.
When your body is exposed to ultraviolet B (UVB) rays, it
starts to make vitamin D. It is recommended that you get between five minutes
to a half-hour of unprotected exposure to the sun twice every week to get a
healthy dose of this vitamin. Any more time than that warrants putting on
sunscreen.
Note that driving your car on a sunny day does not make
vitamin D, as UV radiation does not penetrate glass. So even though you feel
hot while on a mid-day cruise, you are not going to burn, tan, or make vitamin
D.
Other Sources of
Vitamin D
Since UVB rays are less intense during the winter, it can be
difficult to make sufficient vitamin D from the sun. Vitamin D can be found in many
different foods and is fortified in milk and some breakfast cereals. Oily fish,
like tuna and salmon, also contain this important vitamin. If you tend not to consume
these foods, taking a daily supplement may be a wise choice.
Vitamin D – What Is
It Good For?
Absolutely nothing! Vitamin D is very important as it
is necessary for the absorption of calcium into the body. Vitamin D deficiency
can cause bone problems, like like osteomalacia and rickets, in the future.
Do you use the sun as a main source of vitamin D? Do you use
this as an excuse to skip sun protection?
Resources:
http://health.usnews.com/articles/health/living-well-usn/2008/06/23/time-in-the-sun-how-much-is-needed-for-vitamin-d.html
http://nutrition.about.com/od/askyournutritionist/f/sunlight.htm
http://archinte.ama-assn.org/cgi/content/short/168/11/1174
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